OK, for all you nurses out there this is probably no big
deal. However, as an engineer, someone
who barely has to deal with people, dealing with people’s excrement is a bit
traumatic. This is the story of
replacing our head (marine toilet) and our holding tank (where things should go
when you flush the head). It happened
back in the fall, but I was too traumatized to write the story.
When we bought Kailani the head seemed to work and the
holding tank seemed to hold, but when we actually sailed the boat around the
south of Florida to our current location we found some problems. First, a little history - Marine heads got their names from old wooden sailing ships. The toilet was basically a hole cut in the boat that you could sit on. There were usually two; one of each side of the bowsprit which is all the way at the front of the boat or the head of the boat. Anything that went in would just fall directly overboard. It is a little confusing because the bathroom is called the head and the actual toilet is called a head, but we're talking about the toilet for now. Marine heads do not have a tank like a
house toilet does. When you want to use
the head you start by switching a valve to the “wet” position and pumping
a handle to push some water into the bowl. The saying is
“nothing goes into the bowl that hasn’t passed through your body.” Marine heads are notorious for getting
clogged and you can’t just call a plumber.
Putting a bunch of paper in the bowl is a sure way to stop it up and the
rule is – if you stop it up, you get to unstop it. So, you do whatever it is you need to do and
if you need to use paper, you typically put that in the trash, not the bowl. Afterwards you pump some more water into the
bowl then flip the switch back to the “dry” position and empty the bowl. Simple, as long as everything works
correctly.
Plaque in our head.
The new head.
In a harbor the waste goes to the holding tank and offshore
the waste just goes straight overboard.
There is a three way switch in the line that allows the waste to go from
the head to overboard, from the head to the holding tank or from the holding
tank to overboard. That allows the tank
to be pumped overboard when the boat is offshore. It wouldn’t do to be stuck with a full tank
offshore.
When we sailed the boat from the west coast of FL to the
east coast we found that a valve on the water inlet had cracked and was
leaking. To get around that problem we
used the fresh water shower to fill and flush the head. That solution worked for a week, but we
needed to replace the valve because that fix wasn’t going to work long term.
In addition to the inlet water leaking the head itself was
leaking. We thought it might just be the
inlet water, but even after shutting off the inlet water the head was still
leaking. That meant it was waste water
leaking out onto the floor. Yuck.
We had a couple of options at this point. Option 1 was to rebuild the head. It was a Groco head, made of bronze, bullet
proof and would likely last forever. On
the down side the Grocos are horrible to rebuild and require a vise and special
tools. Option 2 was to buy a new
inexpensive head. It would cost about
twice as much as a rebuild kit for the Groco, but it would require very little
work to replace. Also, it would be much
easier to rebuild. Pretty easy choice –
we went with a new Raritan head. It
won’t last as long, but they are cheap to buy and easy to rebuild.
Then we had one more problem. Our holding tank wasn’t holding. Thirty years ago, when our boat was built,
there were no regulations about dumping waste overboard. Since boats didn’t need to contain their
waste they didn’t have holding tanks; everything went directly overboard. Then in the 90’s most states began requiring
boats to contain their waste and use pumpout stations. So, old boats like ours had to find room to
add a holding tank. The easiest way was
to install a soft sided flexible tank.
Those didn’t require any real modification to the boat; just stuff them
into the bilge where ever they would fit and you’re finished. Great solution, but the flexible bags have a
limited life. Ours had passed that limit
long ago and everything that went into the tank now leaked out into the bilge. For those who don’t know, the bilge is the
lowest point of the interior of the boat.
Everything drains down into there and is then pumped out by an automatic
pump.
Summing it all up, we had a leaky inlet valve, a leaky head
and a leaky holding tank. I started with
replacing the leaky inlet valve and the head at the same time. Since I was going to have to disconnect all
the hoses for both jobs I figured I may as well do it once, instead of
twice. We bought a new head, a new
valve, new hose clamps and new hoses then went to work. There was no way to get all the “water” out
of the old head, so we double bagged some heavy lawn garbage bags and carefully
moved the head into them, tied them closed and got the whole mess off the boat. The new head fit perfectly and the new hoses
and valve went in without a hitch.
Then the fun began.
We ordered a new holding tank, once again getting a bag type because it
would fit easily. Once it arrived I just
needed to switch it out with the old tank.
The old tank had leaked waste into the bilge, so I dragged a water hose
into the boat and sprayed everything down until the area was clean. The leaky bag wasn’t empty, but it was as
good as it was going to get. I
disconnected all the hoses, opened the boat, cleared a path then lifted the bag
out. It started out well; no drips or
spills. I had to lift the bag up to get
it out the companionway and that’s when it happened. The bag leaked on my hand, down my arm, on
the steps and on the floor. Let’s just
say the leak wasn’t urine. I almost
dropped everything right there and ran off the boat screaming and waving my
arms around. Then I realized that if I
did that I would still have to get it out of the boat and it wasn’t going to
get any easier. I continued up the steps
being careful where I put my feet and making sure to keep all the parts with
holes elevated. I managed to get it off
the boat, up the dock and into the trash can without spilling anymore, but I
still had it on my hand and arm. I
headed straight to the bathrooms and scrubbed down until my skin was red. Back at the boat I still had some cleaning to
do. I cleaned so thoroughly three months
later there is still a clean spot on the steps.
After cleaning up and recovering mentally I installed the
new holding tank bag. As a water tank it
has a five year warranty, as a holding tank the warranty drops to only one
year. That’s not very long and way too
soon to think about going through this mess again. We still haven’t used the new holding tank
and we’re not sure if we’ll keep it. We
are thinking about cutting a big hole in the floor and putting in a hard plastic
tank that will last for as long as we own Kailani. I guess that depends on how much time we have
after we finish everything else on the list. It would be expensive and messy, but in the long term the benefits may outweigh the trouble.
New holding tank installed and waiting for use. There are three hoses - one is the inlet hose, one the pump out hose and one the vent hose. The vent hose is there to allow for expansion; it wouldn't do to have the tank explode.